1. Department of Anaesthesiology, Hospital Cologne Holweide, Teaching Hospital of the University Cologne, Neufelder Str. 32, 51067 Cologne, Germany
2. Department of Neurology, RWTH Aachen University, Pauwelsstraße 30, 52074 Aachen, Germany
3. JARA-BRAIN Institute Molecular Neuroscience and Neuroimaging, Research Center Jülich, RWTH Aachen University, 52074 Aachen, Germany